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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Mason, William Thomas, Dr

    Related profiles found in government register
  • Mason, William Thomas, Dr
    American

    Registered addresses and corresponding companies

    • The Stockyard, Creake Road, Syderstone, King's Lynn, PE31 8SG, England

      IIF 1

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 2
  • Mason, William Thomas, Dr
    American consultant

    Registered addresses and corresponding companies

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 3
  • Mason, William Thomas, Dr
    American scientist

    Registered addresses and corresponding companies
  • Mason, William Thomas, Dr
    American scientist/consultant

    Registered addresses and corresponding companies

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 7
  • Mason, William Thomas, Dr
    British

    Registered addresses and corresponding companies

    • Satago Cottage, 360a Brighton Road, Croydon, CR2 6AL

      IIF 8
  • Mason, William Thomas, Dr
    British scientific consultant

    Registered addresses and corresponding companies

    • The Stockyard, Creake Road, Syderstone, King's Lynn, PE31 8SG, England

      IIF 9
  • Mason, William Thomas, Dr
    British scientist

    Registered addresses and corresponding companies

    • The Stock Yard, Creake Road, Syderstone, King's Lynn, Norfolk, PE31 8SG, England

      IIF 10
  • Mason, William Thomas

    Registered addresses and corresponding companies

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 11
  • Mason, William Thomas, Dr
    American born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, CB8 8TX, England

      IIF 12

    • Old Flint Barn, Bury Road, Barnham, Thetford, IP24 2PL, England

      IIF 13
  • Mason, William Thomas, Dr
    American company director born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • C/o Bcs, Windsor House, Station Court, Station Road, Great Shelford, Cambridge, CB22 5NE, England

      IIF 14

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 15
  • Mason, William Thomas, Dr.
    British born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • The Stock Yard, Creake Road, Syderstone, King's Lynn, Norfolk, PE31 8SG, England

      IIF 16

    • The Stockyard, Creake Road, Syderstone, King's Lynn, PE31 8SG, England

      IIF 17
  • Mason, William Thomas, Dr.
    British company director born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • The Stockyard, Creake Road, Syderstone, King's Lynn, Norfolk, PE31 8SG, England

      IIF 18
  • Mason, William Thomas, Dr
    American born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • The Stockyard, Creake Road, Syderstone, King's Lynn, PE31 8SG, England

      IIF 19

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 20

    • Mill House, 37 Mill Lane, Stetchworth, Newmarket, Suffolk, CB8 9TR, United Kingdom

      IIF 21
  • Mason, William Thomas, Dr
    American co dir born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Church Street, Barns, Great Shelford, Cambridge, Cambs, CB22 5EL

      IIF 22
  • Mason, William Thomas, Dr
    American co director born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 23
  • Mason, William Thomas, Dr
    American company director born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Barns, Church Street, Great Shelford, Cambridge, CB22 5EL, Uk

      IIF 24 IIF 25

    • Barns, Church Street, Great Shelford, Cambridge, Cambridgeshire, CB22 5EL, Uk

      IIF 26

    • Satago Cottage, 360a Brighton Road, Croydon, CR2 6AL

      IIF 27

    • Caledonian Exchange, 19a Canning Street, Edinburgh, EH3 8HE

      IIF 28

    • 37, Mill Lane, Stetchworth, Newmarket, Suffolk, CB8 9TR, England

      IIF 29

    • Mill House, Mill Lane, Stetchworth, Newmarket, Suffolk, CB8 9TR, United Kingdom

      IIF 30

    • The Old Black Barn, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 31

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, CB8 8TX, England

      IIF 32

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 33
  • Mason, William Thomas, Dr
    American consultant born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mason, William Thomas, Dr
    American director born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mason, William Thomas, Dr
    American non exec director born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mason, William Thomas, Dr
    American scientist born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 44 IIF 45 IIF 46

    • The Old Black Barn, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, United Kingdom

      IIF 47
  • Mason, William Thomas, Dr
    American scientist/cd born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 48
  • Mason, William Thomas, Dr
    American scientist/consultant born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • 7 Curzon Street, Mayfair, London, W1J 5HG

      IIF 49
  • Mason, William Thomas, Dr
    British co director born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Block 3 The Oval, Shelbourne Road, Ballsbridge, Dublin 4, Ireland

      IIF 50
  • Mason, William Thomas, Dr
    British consultant born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Block 3 The Oval, Shelbourne Road, Ballsbridge, Dublin 4, Ireland

      IIF 51

    • C/o Bcs, Windsor House, Station Court, Station Road, Great Shelford, Cambridge, CB22 5NE, United Kingdom

      IIF 52
  • Dr William Mason
    British born in April 1951

    Resident in Gb

    Registered addresses and corresponding companies

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 53
  • Dr William Thomas Mason
    American born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • The Old Black Barn, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 54

    • The Old Black Barns, Lords Lane, Ousden, Newmarket, Suffolk, CB8 8TX, England

      IIF 55 IIF 56
  • Dr William Thomas Mason
    British born in April 1951

    Resident in England

    Registered addresses and corresponding companies

    • The Stockyard, Creake Road, Syderstone, King's Lynn, PE31 8SG, England

      IIF 57
  • Dr William Thomas Mason
    British born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • The Stockyard, Creake Road, Syderstone, King's Lynn, Norfolk, PE31 8SG, England

      IIF 58
  • Dr. William Thomas Mason
    British born in May 1951

    Resident in England

    Registered addresses and corresponding companies

    • 23, Market Place, Fakenham, Norfolk, NR21 9BS

      IIF 59

    • The Stockyard, Creake Road, Syderstone, King's Lynn, Norfolk, PE31 8SG, England

      IIF 60

    • The Stockyard, Creake Road, Syderstone, King's Lynn, PE31 8SG, England

      IIF 61 IIF 62
  • Dr William Thomas Mason
    American born in May 1951

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Mill House 37 Mill Lane, Stetchworth, Newmarket, Suffolk, CB8 9TR, United Kingdom

      IIF 63
child relation
Offspring entities and appointments
Active 13
  • 1
    Dr. W. T. Mason, The Old Black Barns Lords Lane, Ousden, Newmarket, Suffolk, England
    Dissolved Corporate (1 parent)
    Equity (Company account)
    100 GBP2018-05-31
    Officer
    2010-05-13 ~ dissolved
    IIF 15 - Director → ME
    2010-05-13 ~ dissolved
    IIF 11 - Secretary → ME
    Person with significant control
    2016-05-01 ~ dissolved
    IIF 55 - Ownership of shares – 75% or more → OE
  • 2
    The Stockyard Creake Road, Syderstone, King's Lynn, Norfolk, England
    Active Corporate (1 parent)
    Equity (Company account)
    100 GBP2024-01-31
    Officer
    2012-01-05 ~ now
    IIF 21 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 58 - Ownership of shares – 75% or more → OE
  • 3
    TRAKGENE LTD - 2015-06-16
    KINTRAK LIMITED - 2013-08-28
    ZYGEM LIMITED - 2011-12-15
    The Old Black Barns Lords Lane, Ousden, Newmarket, Suffolk, England
    Dissolved Corporate (1 parent)
    Equity (Company account)
    100 GBP2018-04-30
    Officer
    2006-04-12 ~ dissolved
    IIF 33 - Director → ME
    2006-04-12 ~ dissolved
    IIF 2 - Secretary → ME
    Person with significant control
    2016-04-28 ~ dissolved
    IIF 56 - Ownership of shares – 75% or more → OE
  • 4
    The Old Black Barns Lords Lane, Ousden, Newmarket, England
    Dissolved Corporate (1 parent)
    Equity (Company account)
    100 GBP2018-07-31
    Officer
    2015-07-15 ~ dissolved
    IIF 32 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 53 - Ownership of shares – 75% or more → OE
  • 5
    Babraham Research Campus, Babraham, Cambridge
    Active Corporate (5 parents)
    Equity (Company account)
    -171,661 GBP2024-05-31
    Officer
    2019-04-03 ~ now
    IIF 12 - Director → ME
  • 6
    COMPANDX LIMITED - 2019-03-04
    COMPANDIA LIMITED - 2010-08-11
    Biocity Nottingham, Pennyfoot Street, Nottingham
    Active Corporate (4 parents)
    Equity (Company account)
    208,433 GBP2023-12-31
    Officer
    2018-08-30 ~ now
    IIF 13 - Director → ME
  • 7
    MOLECULAR RESOURCES LTD. - 2008-04-19
    BIOTECH BUSINESS LIMITED - 2002-12-23
    The Old Black Barn, Lords Lane, Ousden, Newmarket, Suffolk, United Kingdom
    Dissolved Corporate (2 parents)
    Equity (Company account)
    -819 GBP2019-03-31
    Officer
    1996-03-29 ~ dissolved
    IIF 47 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 63 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 63 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 63 - Right to appoint or remove directors → OE
  • 8
    The Old Black Barn Lords Lane, Ousden, Newmarket, Suffolk, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    100 GBP2018-05-31
    Officer
    2013-05-23 ~ dissolved
    IIF 31 - Director → ME
    Person with significant control
    2016-05-01 ~ dissolved
    IIF 54 - Ownership of shares – 75% or more → OE
  • 9
    BIOTECH DIRECT LIMITED - 2003-01-09
    The Stockyard Creake Road, Syderstone, King's Lynn, England
    Active Corporate (2 parents)
    Equity (Company account)
    651,081 GBP2024-12-31
    Officer
    1995-10-25 ~ now
    IIF 19 - Director → ME
    1995-10-25 ~ now
    IIF 9 - Secretary → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 62 - Ownership of shares – 75% or more → OE
  • 10
    YOUSOFT AUTOMOTIVE LIMITED - 2020-02-20
    The Stockyard Creake Road, Syderstone, King's Lynn, Norfolk, England
    Dissolved Corporate (1 parent)
    Officer
    2021-02-01 ~ dissolved
    IIF 18 - Director → ME
    Person with significant control
    2021-01-01 ~ dissolved
    IIF 60 - Ownership of shares – 75% or more → OE
  • 11
    23 Market Place, Fakenham, Norfolk
    Active Corporate (2 parents)
    Equity (Company account)
    552,154 GBP2024-03-31
    Officer
    1999-03-24 ~ now
    IIF 16 - Director → ME
    1999-03-24 ~ now
    IIF 10 - Secretary → ME
    Person with significant control
    2017-02-16 ~ now
    IIF 59 - Ownership of shares – 75% or more → OE
  • 12
    COMMUNICATION RESOURCES LIMITED - 1995-12-27
    RAPID 6385 LIMITED - 1988-07-29
    The Stockyard Creake Road, Syderstone, King's Lynn, England
    Active Corporate (1 parent)
    Equity (Company account)
    -39,050 GBP2024-06-30
    Officer
    ~ now
    IIF 17 - Director → ME
    ~ now
    IIF 1 - Secretary → ME
    Person with significant control
    2017-02-16 ~ now
    IIF 61 - Has significant influence or control → OE
  • 13
    Satago Cottage, 360a Brighton Road, Croydon
    Dissolved Corporate (3 parents)
    Officer
    2007-11-15 ~ dissolved
    IIF 27 - Director → ME
    2007-11-15 ~ dissolved
    IIF 8 - Secretary → ME
Ceased 30
  • 1
    Caledonian Exchange, 19a Canning Street, Edinburgh
    Dissolved Corporate (2 parents)
    Officer
    2011-12-19 ~ 2015-03-31
    IIF 28 - Director → ME
  • 2
    ETHICAL HOLDINGS PLC - 1999-12-23
    LOCKGEN LIMITED - 1989-10-17
    One, New Change, London
    Active Corporate (11 parents, 1 offspring)
    Officer
    2002-07-19 ~ 2009-10-16
    IIF 51 - Director → ME
  • 3
    ASTHMA ALERT LIMITED - 2006-08-03
    Sfp 9 Ensign House, Admirals Way, Marsh Wall, London
    Dissolved Corporate (3 parents)
    Equity (Company account)
    -201,246 GBP2021-01-31
    Officer
    2008-06-13 ~ 2009-04-15
    IIF 50 - Director → ME
  • 4
    2 Pretoria Road, Cambridge
    Dissolved Corporate (2 parents)
    Equity (Company account)
    0 GBP2018-03-31
    Officer
    2000-02-17 ~ 2009-02-28
    IIF 41 - Director → ME
  • 5
    EVER 2381 LIMITED - 2004-12-13
    Telecom House Millenium Business, Park Station Road Steeton, Keighley Bradford, West Yorkshire
    Active Corporate (3 parents)
    Equity (Company account)
    736 GBP2024-09-30
    Officer
    2004-10-20 ~ 2005-03-18
    IIF 35 - Director → ME
  • 6
    Munro House Trafalgar Way, Bar Hill, Cambridge
    Active Corporate (3 parents)
    Net Assets/Liabilities (Company account)
    2,914,035 GBP2024-12-31
    Officer
    2002-02-26 ~ 2005-09-15
    IIF 45 - Director → ME
  • 7
    25 Science Park, Bio-innovation Centre, Milton Road, Cambridge, England
    Active Corporate (4 parents)
    Profit/Loss (Company account)
    -145,689 GBP2024-02-01 ~ 2024-12-31
    Officer
    2015-06-04 ~ 2015-11-27
    IIF 29 - Director → ME
  • 8
    24 Norman Way Industrial Estate, Norman Way, Over, Cambridge
    Active Corporate (4 parents, 5 offsprings)
    Officer
    2005-04-01 ~ 2011-12-31
    IIF 24 - Director → ME
  • 9
    Camlab Ltd, Norman Way Ind Est, Over, Cambridge
    Active Corporate (4 parents)
    Officer
    2005-04-01 ~ 2011-12-31
    IIF 20 - Director → ME
  • 10
    C/o Windsor House, Station Court, Station Road, Great Shelford, England
    Active Corporate (5 parents)
    Equity (Company account)
    1,021,424 GBP2024-07-31
    Officer
    2019-10-30 ~ 2021-09-30
    IIF 52 - Director → ME
  • 11
    HOMES DIRECTORIES LIMITED - 1998-05-19
    TYPEWELL LIMITED - 1993-01-25
    Unit 3 Valley Court Offices Unit 3 Valley Court Offices, Lower Road, Croydon, Royston, England
    Active Corporate (4 parents)
    Equity (Company account)
    550,024 GBP2024-12-31
    Officer
    1993-01-11 ~ 2007-01-05
    IIF 44 - Director → ME
    1993-01-11 ~ 1995-11-07
    IIF 4 - Secretary → ME
  • 12
    OPERA 80 LIMITED - 1992-06-09
    Unit 330 The Workstation Paternoster Row, Sheffield, England
    Active Corporate (13 parents)
    Officer
    2001-01-17 ~ 2015-01-04
    IIF 23 - Director → ME
  • 13
    HOMES SELECT LIMITED - 1993-10-18
    SPEED 3527 LIMITED - 1993-06-11
    Valley Court Lower Road, Croydon, Royston, Hertfordshire
    Dissolved Corporate (1 parent)
    Total Assets Less Current Liabilities (Company account)
    241 GBP2016-06-30
    Officer
    1993-06-03 ~ 2007-01-05
    IIF 46 - Director → ME
    1993-06-03 ~ 1998-07-03
    IIF 5 - Secretary → ME
  • 14
    Perkinelmer, Chalfont Road, Seer Green, Beaconsfield, Bucks, England
    Dissolved Corporate (2 parents)
    Officer
    1992-01-14 ~ 1998-12-18
    IIF 49 - Director → ME
    1992-01-14 ~ 1996-03-26
    IIF 7 - Secretary → ME
  • 15
    CAMLAB 2007 LIMITED - 2007-04-02
    24 Norman Way Industrial Estate, Norman Way, Over, Cambridge
    Dissolved Corporate (3 parents)
    Officer
    2007-03-19 ~ 2011-12-31
    IIF 37 - Director → ME
  • 16
    MODE DIAGNOSTICS LIMITED - 2016-07-22
    WIRELESS BIODEVICES LIMITED - 2008-12-23
    DUNWILCO (1328) LIMITED - 2006-06-21
    1 West Regent Street, Glasgow, Scotland
    Dissolved Corporate (5 parents)
    Officer
    2008-07-01 ~ 2009-09-30
    IIF 22 - Director → ME
  • 17
    2 Venture Road, Southampton Science Park, Southampton, Hampshire
    Dissolved Corporate (3 parents)
    Officer
    2005-03-11 ~ 2005-10-14
    IIF 39 - Director → ME
  • 18
    INTERNET TECHNIQUE LIMITED - 2003-02-04
    Epsilon House Enterprise Road, Southampton Science Park, Southampton, England
    Active Corporate (3 parents, 2 offsprings)
    Officer
    2003-01-31 ~ 2005-10-14
    IIF 40 - Director → ME
  • 19
    MOLECULAR RESOURCES LTD. - 2008-04-19
    BIOTECH BUSINESS LIMITED - 2002-12-23
    The Old Black Barn, Lords Lane, Ousden, Newmarket, Suffolk, United Kingdom
    Dissolved Corporate (2 parents)
    Equity (Company account)
    -819 GBP2019-03-31
    Officer
    1996-03-29 ~ 2003-04-01
    IIF 6 - Secretary → ME
  • 20
    C/o Windsor House Station Court, Station Road, Great Shelford, Cambridge, United Kingdom
    Active Corporate (4 parents)
    Equity (Company account)
    -3,213,488 GBP2024-12-31
    Officer
    2010-12-13 ~ 2018-11-01
    IIF 14 - Director → ME
  • 21
    Greenhouse Park Innovation, Centre, Newmarket Road, Teversham, Cambridge
    Dissolved Corporate (3 parents)
    Officer
    2004-01-01 ~ 2008-01-11
    IIF 43 - Director → ME
  • 22
    Benson House, 33 Wellington Street, Leeds, West Yorkshire
    Dissolved Corporate (3 parents)
    Officer
    2004-01-01 ~ 2008-01-11
    IIF 42 - Director → ME
  • 23
    ADIPOSET LTD - 2013-02-26
    Ground Floor Portland House, New Bridge Street West, Newcastle Upon Tyne
    Dissolved Corporate (1 parent)
    Officer
    2012-06-01 ~ 2015-03-31
    IIF 30 - Director → ME
  • 24
    BIOTECH DIRECT LIMITED - 2003-01-09
    The Stockyard Creake Road, Syderstone, King's Lynn, England
    Active Corporate (2 parents)
    Equity (Company account)
    651,081 GBP2024-12-31
    Person with significant control
    2016-06-01 ~ 2016-06-01
    IIF 57 - Ownership of shares – 75% or more → OE
  • 25
    SPHERE MEDICAL HOLDING PLC - 2017-10-20
    SPHERE MEDICAL HOLDING LIMITED - 2006-11-10
    GG 105 LIMITED - 2004-01-14
    15 Canada Square, London
    Dissolved Corporate (6 parents, 1 offspring)
    Officer
    2003-12-29 ~ 2011-11-10
    IIF 36 - Director → ME
  • 26
    Abbey Barns, Duxford Road, Ickleton, Cambridgeshire
    Active Corporate (5 parents, 1 offspring)
    Officer
    2001-05-25 ~ 2012-10-01
    IIF 26 - Director → ME
  • 27
    M&R 623 LIMITED - 1995-05-25
    Abbey Barns, Duxford Road, Ickleton, Cambridgeshire
    Dissolved Corporate (6 parents)
    Officer
    2001-05-25 ~ 2012-10-01
    IIF 25 - Director → ME
  • 28
    LEGISLATOR 1513 LIMITED - 2001-02-19
    1 Cambridge Research Park, Waterbeach, Cambridge, England
    Active Corporate (6 parents, 1 offspring)
    Equity (Company account)
    824,000 GBP2023-04-30
    Officer
    2001-04-26 ~ 2003-12-17
    IIF 48 - Director → ME
  • 29
    6 St Edwards Passage, Cambridge, Cambridgeshire
    Active Corporate (7 parents)
    Officer
    2003-09-08 ~ 2011-02-20
    IIF 34 - Director → ME
    2004-10-21 ~ 2005-01-11
    IIF 3 - Secretary → ME
  • 30
    ORTHOMIMETICS LIMITED - 2010-02-10
    C/o Hackwood Secretaries Limited, One, Silk Street, London, United Kingdom
    Dissolved Corporate (2 parents)
    Officer
    2006-01-10 ~ 2009-11-30
    IIF 38 - Director → ME

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.